linux-stable.git/drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c, branch v4.5 Linux kernel stable tree drm/amdgpu: return from atombios_dp_get_dpcd only when error 2016-03-02T16:01:25+00:00 Arindam Nath arindam.nath@amd.com 2016-03-02T11:49:01+00:00 0b39c531cfa12dad54eac238c2e303b994df1ef7 In amdgpu_connector_hotplug(), we need to start DP link training only after we have received DPCD. The function amdgpu_atombios_dp_get_dpcd() returns non-zero value only when an error condition is met, otherwise returns zero. So in case the function encounters an error, we need to skip rest of the code and return from amdgpu_connector_hotplug() immediately. Only when we are successfull in reading DPCD pin, we should carry on with turning-on the monitor. Signed-off-by: Arindam Nath <arindam.nath@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Cc: stable@vger.kernel.org 
In amdgpu_connector_hotplug(), we need to start DP link
training only after we have received DPCD. The function
amdgpu_atombios_dp_get_dpcd() returns non-zero value only
when an error condition is met, otherwise returns zero.
So in case the function encounters an error, we need to
skip rest of the code and return from amdgpu_connector_hotplug()
immediately. Only when we are successfull in reading DPCD
pin, we should carry on with turning-on the monitor.

Signed-off-by: Arindam Nath <arindam.nath@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
drm/amdgpu: Don't link train DisplayPort on HPD until we get the dpcd 2015-08-21T22:07:38+00:00 Alex Deucher alexander.deucher@amd.com 2015-08-21T22:07:38+00:00 a887adadb7b9ef9eb4ee48e4ad575aefcfd1db14 This is a port of: DRM - radeon: Don't link train DisplayPort on HPD until we get the dpcd to amdgpu. Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Cc: stable@vger.kernel.org 
This is a port of:
DRM - radeon: Don't link train DisplayPort on HPD until we get the dpcd
to amdgpu.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
drm/amdgpu: fix const warnings in amdgpu_connectors.c 2015-06-04T01:03:15+00:00 Alex Deucher alexander.deucher@amd.com 2015-04-16T19:48:09+00:00 17b10f941f939da459072a066c6e5e9af9dda610 Acked-by: Christian König <christian.koenig@amd.com> Acked-by: Jammy Zhou <Jammy.Zhou@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> 
Acked-by: Christian König <christian.koenig@amd.com>
Acked-by: Jammy Zhou <Jammy.Zhou@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
drm/amdgpu: add core driver (v4) 2015-06-04T01:03:15+00:00 Alex Deucher alexander.deucher@amd.com 2015-04-20T20:55:21+00:00 d38ceaf99ed015f2a0b9af3499791bd3a3daae21 This adds the non-asic specific core driver code. v2: remove extra kconfig option v3: implement minor fixes from Fengguang Wu v4: fix cast in amdgpu_ucode.c Acked-by: Christian König <christian.koenig@amd.com> Acked-by: Jammy Zhou <Jammy.Zhou@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> 
This adds the non-asic specific core driver code.

v2: remove extra kconfig option
v3: implement minor fixes from Fengguang Wu
v4: fix cast in amdgpu_ucode.c

Acked-by: Christian König <christian.koenig@amd.com>
Acked-by: Jammy Zhou <Jammy.Zhou@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>